| Covilha to Smolyan | 1,673.42 mi (2,693.11 km) |
| Covilha to Sofia | 1,595.38 mi (2,567.52 km) |
| Covilha to Sopot | 1,667.54 mi (2,683.65 km) |
| Covilha to Sozopol | 1,818.59 mi (2,926.74 km) |
| Covilha to Sredets | 1,793.87 mi (2,886.95 km) |
| Covilha to Stamboliyski | 1,660.22 mi (2,671.87 km) |
| Covilha to Stara Zagora | 1,714.65 mi (2,759.46 km) |
| Covilha to Svilengrad | 1,748.37 mi (2,813.73 km) |
| Covilha to Svishtov | 1,692.47 mi (2,723.77 km) |
| Covilha to Targovishte | 1,756.09 mi (2,826.16 km) |
| Covilha to Teteven | 1,641.53 mi (2,641.79 km) |
| Covilha to Troyan | 1,664.42 mi (2,678.63 km) |
| Covilha to Tryavna | 1,704.03 mi (2,742.37 km) |
| Covilha to Tutrakan | 1,753.66 mi (2,822.24 km) |
| Covilha to Varna | 1,823.13 mi (2,934.04 km) |
